One of the major reason why we gamble is to make more money from our initial capital or fund. The profits we do make in gambling is what makes us to keep tryimg our lucks in gambling so we can make money but many gamblers had forgotten the reasons why they are gambling take a wrong move to becoming addicted to gambling which supposed not to be so. Gambling is good and we should go for the fun alone.
The first sentence in your post describes perfectly how a gambling addict thinks. They think that they can make a fortune from gambling so if you think this is possible then there is something wrong and you need to learn more about this undistry and how casinos work and how they make profit. Casinos make profit if their customers lose. So they make sure you will lose in the long term and if you win and make a good profit then this is an exception just to give hope for other players.
You need to think of gambling as a mean of entertainment nothing more nothing less.